I'm not mad at the users, nor am I at GP, I just happen to know both sides of the story and it's too frustrating to watch this problem recurring and watching multiple social media getting roadkilled. It undoubtedly contributed to Twitter turmoil, it was direct cause for Mastodon Fediverse collapse, Bluesky architectural changes enough to disappoint the Twitter inventor Jack Dorsey, so on.
It's always "it". Endless massive shipments of novel artificial porn, leaking out of the nation-scale languistic and cultural isolate bubble of Japanese, which maintains internal meme-fusion self-sustainance condition and positive meme-pressure neither requiring nor exploiting meaningful amount of external contacts.
So all those efforts for Japanese compliance under self deceptions at both sides that Japanese exist on the same social graph just ends in vain. These people are both there and effectively not there. The internet has no physical dimensions and these people will happily move to wherever there is free-ridable Twitterlike infrastructure, but trying to first integrate them into something they don't intend to blend in and then trying to apply the same ethical standards used by now-minority part won't make sense(just like how IRL across-culture immigration fail unless naturalization was the voluntary goal from the beginning).
Therefore I genuinely think segregating the Internet is for the best interest of all - knowing full well that this term is historically related to situations where one of two groups enslave the others, based on my understanding that it was, unbeknownst to some, how it always had been. What's the problem formalizing that, especially if this many people are this frustrated other this particular problem.
---
PS:
- by the way, someone else in the comments said situations similar to horrible status quo GP/GGP described do not apply to Threads, which reuses Facebook infra. Just, you know, guess which country has single abnormally low Facebook adoption. Or list social media that are nice and correlate that with user countries of origin. Not by regions, but by flags.
- wrt China: I think China and GFW is interesting one - with Google lockout, TikTok ownership controversies, collapsing white collar job market, etc. So far their closed Internet don't seem to have achieved fusion status but rather duplicating imports - I don't think censorship is sole or primary cause for that behavior; they have no issues sneaking in Inmu meme on anything from military propaganda to nickname for export HSR.